The outer fabric is 100% cotton, which feels good against the skin, and it's a square-cornered elastic type (like a fitted sheet) so it doesn't slip easily. It's a calm beige color, so stains are less noticeable. I bought one when my baby was a newborn and it was great, so I bought a spare. However, since then, my child has started going to daycare and is no longer in the napping stage, so one is enough, and I'm selling this one. Photos 1-3 are reference images from the purchase page, and the actual item is shown in photos 4 and later. The color may appear different in the photos than in person. Since it's unopened, I haven't inspected it, so I can't be responsible for initial defects. I'm sorry, but I can't offer a discount. It will be simply packaged. The shipping method may be changed.